The document contains minimum performance requirements for liquid applied flashing used to provide water-resistive seals around exterior wall openings in buildings. This includes fenestration products such as windows and doors, as well as other through-wall penetrations.
Through wall flashing is a perfect example of a frequently overlooked structural component. In order to protect the structural integrity of your building, it is necessary to learn what through-wall flashings are, where in your building you can find through-wall flashings, and how to evaluate the condition of through-wall flashings for regular maintenance.
Through-Wall Flashing Gets an Update (and Upgrade)
Without through-wall flashings, buildings made from absorbent materials like brick may experience water pooling along porous surfaces. This can damage walls if it is not promptly repaired. Through wall flashing is an essential building component that acts as a barrier against external water and moisture sources.
Try examining the area to the immediate left or right of the window, as well as above and below. Pay attention to the walls that intersect your roof. Walls that sit above an intersection roofline (either sloped or straight) often contain through-wall flashings to assist with the removal of water. However, an expert can help you locate your flashing, no matter the type you may have.
Unfortunately, not all building improvements are seamless and sleek, and this tends to be true for through-wall flashings. Even skillfully installed through-wall flashings may still be noticeable to the naked eye. You can conceal flashings by using projecting flanges or drip edges, although you may find these options lacking in visual appeal.
Through-wall flashing is commonly fabricated by deforming the metal in such a way as to provide bond strength in mortar joints. All through-wall flashing should be set with a bed of mortar above and below the flashing in strict compliance with the flashing manufacturer's specifications.
The Fenestration and Glazing Industry Alliance (FGIA) has published an updated document which establishes minimum performance requirements for liquid applied flashing used to provide water-resistive seals around exterior wall openings in buildings. This includes fenestration products such as windows and doors, as well as other through-wall penetrations. AAMA 714-22, Specification for Liquid Applied Flashing Used to Create a Water-Resistive Seal Around Exterior Wall Openings in Buildings, is now available for purchase.
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Through-wall flashings are installed inside the building envelope and direct water away from critical areas. While through-wall flashings are invisible to the naked eye, they play a crucial role in preventing water damage for all types of buildings.
There are many types of through-wall flashings, each designed for a specific building type. For example, masonry buildings require a different type of flashing than metal buildings. In general, through-wall flashings are typically made from stainless steel, aluminum, or another type of metal.
Through-wall flashings direct water away from moisture-prone areas of the building. Water damage can cause significant problems for a building, including mold and rot. By preventing moisture buildups, through-wall flashings help to prolong the life of a building.
Because they are installed behind siding, stucco, or other exterior finishings, through-wall flashings are not visible from the outside of the building. However, they are accessible from the inside if needed.
The Fenestration and Glazing Industry Alliance (FGIA) has published an updated document that establishes minimum performance requirements for liquid-applied flashing used to provide water-resistive seals around exterior wall openings in buildings. 2ff7e9595c
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